<!DOCTYPE html>
<meta charset="UTF-8">
<form action="upload" enctype="multipart/form-data" method="post" target="demo_iframe">
	价格：<input type="text" name="price" value="50"/><br/>
	作者：<input type="text" name="author" value="琼羽"/><br/>
	书籍：<input type="file" name="books"/><br/>
	书籍：<input type="file" name="books"/><br/>
	书籍：<input type="file" name="books"/><br/>
	<button type="submit">上传</button>
</form>